Flashing



Nov. 24, 1931. M. wool. E'r AL 17,833,730

FLASHING Filed June 25, 1950 (Ittorneg late'nufaiL Nav. 24, 1931 AUNITE-Di STATES .fluirEl'a'rol-FI'cla'.`

Hormis woor. .um mm: w. woor., or Bumeran, VERMONT FLASHING j i iApplication filed J'une 25,; 1930. Serial No. 463,785.

Our present invention relates to interlock-- ing sheet metal fiashing,such asy used in the mortar courses in building constructions at variouspoints to prevent descent of moisture through the walls,l and has, forits pri- Vmary object to provide a joint between the sections or stripsof the fiashingwhich will effectively prevent the passage ofmoisturethrou'glrthe flashing, andwhich will retain its moisture-proofeffectiveness even when bent to such, an extent astodestroy theeffectiveness of an ordinary-joint.

A further object is the provision of a joint which may be readilyassembled, which will be sufiiciently rigid to easily and properlymaintain the sections of flashingv in the de,

sired position andprelationship while the mortar is placed over thesame, and which will permit of readily bending external -or exposedportions of the flashing, where necessary, without danger ofdisconnection of the engaged parts.

In the accompanying drawings which illustrates our invention and forms apart of this specification:

Figure l is a detail perspective view of the inter-engaging edgeportions of a pairI of flashing sections in detached relation.

the sections in engaged relation.'

Figure 3, is a view partly in elevation and partly in section showingour use of the flashing in building construction necessitating thebending of an exposed side of the flashing. i

Referring to these figures, and partlcularly to Figure 3, we have showntherein our improved sheet metall flashing generally at- 10,V in one ofthe mortar courses of a wall 11 along and above a roof 12, In thisinstance the roofcovering 13 isshown wlth yan upstanding edge 14 and theflashing 10 has an exposed portion at the inner side of the wall llbentdownwardly as at 15 to overlapvthe upstanding portion 14 of the roofcoverlng, so as to thus not only prevent the descent of moisture throughthe wall 11, but alsothe passage Vof moisture into the wall from 1theroof 12. I j

Flashing of the present type,l commonly- Figure 2is a side. or edgeview, showing cause the relative displacement of the sections, 1n theflooding or mortar over the same. The 55 joint of our invention preventsthis, and in carrylng the same 1nto effect, we provide one .section 10aas in Figures 1and'2 with an offset substantially flat engaging lip 16along its engaging edge. The' other contacting secw tion 10b yhas anundercut lgroove 17 and a `channel 18 opening therethrough into thisgroove to receive the lip 16 so that the latter 4may seat within thegroove with its offset in thchannel and forming asubstantial lock soasto avoid relative displacement of the l two sections when so joined. Thegroove 17 constitutes a perfect watershedsince it is formed in the firstinstance by reversely bent portions 19 and 20 of? the section 10b atopposite sides vof the groove, these reversely'bent portions being inthe spaced parallel relation plainly shown in Figures 1 and 2.' The lip16`of section 10a seats beneath the reversely bent portion 19 and thereversely bent ortionv 20 terminates in a flat free edge 21 doubled backthereon and approximately coextensive with the section 10b so that it isthus adapted by the inherent springiness of the metal to seat flatwiseagainst the undersurface of the section 10B. adjacent to its offset,

when the sections are joined in the manner above described, as plainlyseen in Figure 2.

This arrangement 1s obviously Stroh that a n f `complete watershedresults so thatJ the flash- ,85 A

ing is perfectly moisturelproofand the joint f j is in no danger ofdestruction in so far as vits water-proof duality is concernedLby thebending 'of an exposed portion such as indicated at 15in Figure 3. Infact upon the assembly is permitted, and effective bond with `the mortaris provided` for, and allv danger of displacement of adjacent sectionsduringthe flooding of mortarthereoverjis obviated. 10i

y ,Whatis clainea A flashing of ,sheet metal sectional con Y structionof which one section hasl an ofset 'Y continuing terminaledgeforming aHat lip `5 and an abrupt shoulder along the inner portion of said lip,and the -other section has spaced parallel portions thereof along -oneedge bent back upon themselves and forming 1 j an undercut groove and achannel between 10 them centrally of the groove wherebyto receive thesaidlip through the channel and within one side of the groove with theshoulderpositioned in the channel'andl the two sections inthe sameplane, one of said;

'1.5 bent back\portions at lthe same side of the groovefrictionallyengaging the lip to hold the latter within the groove, andthe other bent back portion having a reversely and out- Wardly4 bentbacl; fiat free edge normally 20 approximately in the same plane withits respective section and forcibly contacting in -atwise relationagainst the undersurface of the fiat section in the assembled position.

Intestimony whereof we hereunto aliix our 25 signatures# MORRIS WOOL.

FRANK W.`WOOL.

